Question: Which tributary of the Ussuri River flows to the right?
Paraphrase: What is the name of the tributary that runs to the right of the Ussuri River?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q207777 p:P974 ?s . ?s ps:P974 ?obj . ?s pq:P560 wd:Q14565199 }